Hello, inherited gun;serial 631,xxx L.C. Smith Field Grade, Hamerless Single Hunter Trigger, Ejectors: Left side not firing, I only get 1 'click' , I can see when I open left side hasn't fired as ejector up already, where as right side is back and ready to eject the shell in my face..ha. If I disassemble I can see both rods are cocked (loose, obviously not decocked) , so its cocking..but not firing. advice ? Something obvious I should check ? Thanks J